6.1.3 Hess's Law and Calorimetry Flashcards
Write a balanced thermochemical equation that expresses the enthalpy change for a given chemical reaction. Be sure to correctly specify the physical state (and, if necessary, the concentration) of each component. Write an equation that defines the standard enthalpy of formation of a given chemical species. Define the standard enthalpy change of a chemical reaction. Use a table of standard enthalpies of formation to evaluate ΔHf°. State the principle on which Hess' law depends, and explain why th (2 cards)
1
Q
Describe Thermochemistry
A
It is the quantitative study and measurement of heat and enthalpy changes.
2
Q
Define Stantard State
A
T = 25°
C = 298.15 K
P = 1 atm = 103.25kPa
